Added initial named-assets implementation

system/config/system.yaml

@@ -55,6 +55,8 @@ assets:                                # Configuration for Assets Manager (JS, C
   css_rewrite: true                    # Rewrite any CSS relative URLs during pipelining
   js_pipeline: false                   # The JS pipeline is the unification of multiple JS resources into one file
   js_minify: true                      # Minify the JS during pipelining
+  collections:
+    jquery: system://assets/jquery/jquery-2.1.3.min.js
 
 errors:
   display: true                        # Display full backtrace-style error page

system/src/Grav/Common/Assets.php

@@ -169,6 +169,11 @@ class Assets
 
         $this->config($asset_config);
         $this->base_url = $base_url . '/';
+
+        // Register any preconfigured collections
+        foreach ($config->get('system.assets.collections') as $name => $collection) {
+            $this->registerCollection($name, (array)$collection);
+        }
     }
 
     /**
@@ -228,7 +233,9 @@ class Assets
             foreach ($asset as $a) {
                 $this->addCss($a, $priority, $pipeline);
             }
-
+            return $this;
+        } elseif (isset($this->collections[$asset])) {
+            $this->add($this->collections[$asset], $priority, $pipeline);
             return $this;
         }
 
@@ -267,7 +274,9 @@ class Assets
             foreach ($asset as $a) {
                 $this->addJs($a, $priority, $pipeline);
             }
-
+            return $this;
+        } elseif (isset($this->collections[$asset])) {
+            $this->add($this->collections[$asset], $priority, $pipeline);
             return $this;
         }
 
@@ -529,17 +538,68 @@ class Assets
         return $relative_path . $key;
     }
 
+    /**
+     * Return the array of all the registered CSS assets
+     *
+     * @return array
+     */
+    public function getCss()
+    {
+        return $this->css;
+    }
+
+    /**
+     * Return the array of all the registered JS assets
+     *
+     * @return array
+     */
+    public function getJs()
+    {
+        return $this->js;
+    }
+
+    /**
+     * Return the array of all the registered collections
+     *
+     * @return array
+     */
+    public function getCollections()
+    {
+        return $this->collections;
+    }
+
+    /**
+     * Determines if an asset exists as a collection, CSS or JS reference
+     *
+     * @param $asset
+     *
+     * @return bool
+     */
+    public function exists($asset)
+    {
+        if (isset($this->collections[$asset]) ||
+            isset($this->css[$asset]) ||
+            isset($this->js[$asset])) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
     /**
      * Add/replace collection.
      *
      * @param  string $collectionName
      * @param  array  $assets
+     * @param bool    $overwrite
      *
      * @return $this
      */
-    public function registerCollection($collectionName, Array $assets)
+    public function registerCollection($collectionName, Array $assets, $overwrite = false)
     {
-        $this->collections[$collectionName] = $assets;
+        if ($overwrite || !isset($this->collections[$collectionName])) {
+            $this->collections[$collectionName] = $assets;
+        }
 
         return $this;
     }
@@ -578,26 +638,6 @@ class Assets
         return $this;
     }
 
-    /**
-     * Get all CSS assets already added.
-     *
-     * @return array
-     */
-    public function getCss()
-    {
-        return $this->css;
-    }
-
-    /**
-     * Get all JavaScript assets already added.
-     *
-     * @return array
-     */
-    public function getJs()
-    {
-        return $this->js;
-    }
-
     /**
      * Add all CSS assets within $directory (relative to public dir).
      *

system/src/Grav/Common/Debugger.php

@@ -46,9 +46,11 @@ class Debugger
     public function addAssets()
     {
         if ($this->enabled()) {
-
             $assets = $this->grav['assets'];
 
+            // Add jquery library
+            $assets->add('jquery', 101);
+
             $this->renderer = $this->debugbar->getJavascriptRenderer();
             $this->renderer->setIncludeVendors(false);